A rectangular lawn measures 80 meters by 60 meters and has two roads, each 10 meters wide, crossing through its center—one running along the length and the other along the width. What is the total cost to cover both roads at a rate of Rs. 3 per square meter?
Explanation
The combined area of the two roads is calculated using the formula: (length + breadth - width of road) × width of road. Substituting the values: (80 + 60 - 10) × 10 = 1300 m². Multiplying by the cost per square meter: 1300 × 3 = Rs. 3900.